A few questions - elixir-lang-core

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Message from discussion A few questions
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From: =?ISO-8859-1?Q?Jos=E9_Valim?= <jose.va...@gmail.com>
Date: Sun, 25 Mar 2012 13:11:32 +0200
Message-ID: <CAGnRm4+mPRK7gpokA4krXXURow2No+K2+7G9NSjuW3S+czy...@mail.gmail.com>
Subject: Re: A few questions
To: elixir-lang-core@googlegroups.com
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Basically you always need a dot to invoke something. But sometimes there
isn't anything between the dot and the parenthesis, because the function is
anonymous.


*
Jos=E9 Valim
www.plataformatec.com.br
Founder and Lead Developer
*


On Sun, Mar 25, 2012 at 1:02 PM, Alexei Sholik <alcosho...@gmail.com> wrote=
:

> This is one way to interpret the situation. One other way we could
>> interpret it is considering that functions are anonymous and therefore
>> don't expect a name to be given on invocation. For example, imagine we h=
ave
>> a module named List. If we want to invoke a function of that module, we
>> need to pass a name, for example, flatten:
>>
>>     List.flatten([1,2,3])
>>
>> However, functions doesn't require a name to be invoked, and therefore w=
e
>> can omit the `flatten`:
>>
>>     function.([1,2,3])
>>
>> So we could fit everything under named and anonymous invocation. The
>> expression flatten([1,2,3]) would be a named invocation as well, because=
 it
>> is simply a shortcut to __LOCAL__.flatten([1,2,3]).
>>
>
> I don't understand the transition from "List.flatten" (which is
> MODULE_NAME.FUNCTION_NAME) to "function." (which is function.NOTHING ??).
>
>
> --
> Best regards
> Alexei Sholik
>

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<p class=3D"p1">Basically you always need a dot to invoke something. But so=
metimes there isn&#39;t anything between the dot and the parenthesis, becau=
se the function is anonymous.</p><div><br></div><div><br></div><span style=
=3D"font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><=
b><span style=3D"border-collapse:separate;font-family:arial;font-weight:nor=
mal"><div>

<span style=3D"font-family:arial,sans-serif;font-size:13px;border-collapse:=
collapse"><b>Jos=E9 Valim</b></span></div><div><span style=3D"font-family:a=
rial,sans-serif;font-size:13px;border-collapse:collapse"><div><span style=
=3D"font-family:verdana,sans-serif;font-size:x-small"><a href=3D"http://www=
.plataformatec.com.br/" style=3D"color:rgb(42,93,176)" target=3D"_blank">ww=
w.plataformatec.com.br</a></span></div>

<div><span style=3D"font-family:verdana,sans-serif;font-size:x-small">Found=
er and Lead Developer</span></div></span></div></span></b></span><br>
<br><br><div class=3D"gmail_quote">On Sun, Mar 25, 2012 at 1:02 PM, Alexei =
Sholik <span dir=3D"ltr">&lt;<a href=3D"mailto:alcosho...@gmail.com">alcosh=
o...@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class=3D"gma=
il_quote"><div>This is one way to interpret the situation. One other way we=
 could interpret it is considering that functions are anonymous and therefo=
re don&#39;t expect a name to be given on invocation. For example, imagine =
we have a module named List. If we want to invoke a function of that module=
, we need to pass a name, for example, flatten:</div>




<div><br></div><div>=A0 =A0 List.flatten([1,2,3])</div><div><br></div><div>=
However, functions doesn&#39;t require a name to be invoked, and therefore =
we can omit the `flatten`:</div><div><br></div><div>=A0 =A0 function.([1,2,=
3])</div>




<div><br></div><div>So we could fit everything under named and anonymous in=
vocation. The expression flatten([1,2,3]) would be a named invocation as we=
ll, because it is simply a shortcut to __LOCAL__.flatten([1,2,3]).</div>


</div></blockquote><div><br></div><div>I don&#39;t understand the transitio=
n from &quot;List.flatten&quot; (which is MODULE_NAME.FUNCTION_NAME) to &qu=
ot;function.&quot; (which is function.NOTHING ??).</div></div><span class=
=3D"HOEnZb"><font color=3D"#888888"><br clear=3D"all">


<div><br></div>-- <br>Best regards<br>Alexei Sholik<br>
</font></span></blockquote></div><br>

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